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Custom Engineering From Site Investigation to Final As-Builts

Turn to Custom Engineering for premium consulting engineering services. We are focused on the design of mechanical, plumbing, and electrical systems for new construction and rehabilitation of commercial and industrial facilities. Our team has designed systems for projects that range in size from small rehabs to multi-million-dollar facilities; we have the experience needed to provide you with great service. What challenges are you facing with current providers?  We want to improve your experience.

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About Us



What do our clients say?

"Custom Engineering was very flexible in working with our company to meet the specific security and schedule requirements of our client." - GBA

"Thank you for the excellent design services performed!  You all have done outstanding work!"

Rob Rastorfer, VP, PE,  HNTB / Design-Build

"You all did a great job with the whole lighting design and have given [our client] that “wow” factor they were looking for on this project." 

Brad Stegemann, SOA Architecture

Call us at (816) 350-1473

Electrical and Lighting Design
Fountain Plumbing
Plumbing Design
HVAC System
HVAC Design
Building Information Model
Building Information Model
Designed Building Facade
Sustainable, LEED-Certified Design
Men Working On Equipment

About Us

Founded in 1974, Custom Engineering produces energy-efficient designs following all applicable building codes, standards, and specific owner design guidelines for commercial, industrial, and institutional clients. We are licensed in 38 states plus the District of Columbia. Sustainability and energy efficiency are keys to our success, so we use the latest lighting technology, variable frequency drives, and high-efficiency motors. Our LEED® Accredited Professionals follow United States Green Building Council LEED® program sustainable strategies and incorporate them to produce the most benefit.

If you are looking for employment, view our openings in our offices located in Independence and St. Louis, Missouri.

Mission Statement

At Custom Engineering, it is our mission to be your preferred supplier of engineering consulting services. To achieve this, we strive to exceed your expectations at every possible opportunity.


To reach the highest levels of client satisfaction, we make it our goal to practice the following four values on a daily basis:

  • We treat all of our clients with respect and reverence.
  • We look for ways to make it easier for you to do business with us.
  • We preserve your financial interest.
  • We provide the most talented team possible for your project.

We are grateful for your business and pleased to have the opportunity to work with you. That's the Custom Engineering difference.

MBE/DBE Certifications

Custom Engineering is currently certified as a Disadvantaged Business Enterprise though the Missouri Regional Certification Committee. We are also certified through several other entities. Some of our other Minority Business Enterprise / Disadvantaged Business Enterprise / Small Disadvantaged Business Enterprise Certifications include:

State of Missouri Office of Administration

City of Kansas City, MO

City of St. Louis, MO

Illinois Capitol Development Board

North Central Texas Regional Certification Agency

St. Louis Minority Supplier Development Council

National Minority Supplier Development Council – Mountain Plains Chapter
Uniform Certification Agency

Other MBE Certifications (KCATA, MODOT, Federal, etc.)

Minority Supplier Development Council Certification


Thank you for your interest. We look forward to learning more about your needs.

(816) 350-1473

(314) 366-3360

(573) 875-4365

Service Area
Nationwide-Licensed in 38 States plus the District of Columbia

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12760 E US Hwy 40
Independence, MO 64055

St. Louis Branch
1552 S. 7th St.
St. Louis, MO 63104

Columbia (Timberlake Engineering)
912 Old Highway 63 South
Columbia, MO 65201

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